Gastrointestinal perforation in liver transplantation recipients: risk factors analysis from a 10-year retrospective study with an international multicenter survey about management strategies.

Risk factors for gastrointestinal (GI) perforations in adult liver transplantation (LT) recipients have never been deeply investigated, as well as their management. The aim of this study is to report a single-center 10 years' experience about GI perforations after LT, focusing on risk factors and management strategies according to an international survey involving expert transplant surgeons. Data regarding all consecutive patients undergoing liver transplantations from January 2009 until December 2019 in a single institution were retrospectively collected. Risk factors for GI perforation were investigated. A web survey about the management of gastrointestinal perforations was conducted among worldwide transplantation centers. On 699 adult liver transplantations performed in our center, 20 cases of GI perforations were found, with an incidence of 2.8%. A previous abdominal surgery was found to be the only risk factor (p = 0.01). Ninety-day mortality was 75%. According to the survey, a more conservative treatment was suggested in case of gastric and duodenal perforations (consisting in a direct suture or an external drain), while a more aggressive treatment was adopted for ileal or colic perforation (stoma with or without resection). The W value for inter-personal agreement was 0.41. Despite rare, GI perforations in LT recipients can represent a life-threatening complication. Surgical management can be challenging and depends on both the site of perforation and the clinical conditions of the patient.